Battery pack and electric equipment

Abstract

The utility model relates to a battery pack and electric equipment, the battery pack comprises a battery pack box body, a battery cell module and a pouring sealant piece, an accommodating space is arranged in the battery pack box body, and the battery cell module is arranged in the accommodating space; the battery cell module comprises a plurality of battery cell columns, each battery cell column comprises a plurality of battery cells arranged along a first direction, the plurality of battery cell columns are arranged along a second direction, and the second direction intersects with the first direction; wherein in the same battery cell column, the narrow surfaces of two adjacent battery cells are opposite, a first gap is formed between the narrow surfaces of the two adjacent battery cells, a pouring sealant piece is arranged in the first gap, and the pouring sealant piece is arranged between the narrow surfaces of the battery cells, so that the heat transfer of the narrow surfaces of the battery cells can be effectively prevented; the mode of directly injecting the pouring sealant into the accommodating space to fill the first gap can omit the process of assembling the heat insulation piece, and can simplify the process difficulty of arranging the heat insulation piece, thereby simplifying the assembly difficulty of the battery pack.

Description

Technical Field

[0001] The present disclosure relates to the field of battery technology, and in particular, to a battery pack and an electrical device. Background Art

[0002] The battery pack is a device used to provide energy to electrical equipment (such as vehicles) and is a core component of electrical equipment. The power battery of new energy vehicles contains multiple battery cells, which are usually stacked in sequence to form a battery module. During the use of the power battery, the battery cells will inevitably generate heat and transfer the heat. If the superimposed heat is too high, it will greatly affect the service life of the battery cells and even cause safety hazards such as thermal runaway. In related technologies, the thermal insulation protection effect between battery cells is not ideal. Utility Model Content

[0003] The purpose of the present disclosure is to provide a battery pack and an electrical device to at least partially solve the technical problems existing in the related art.

[0004] In order to achieve the above-mentioned object, the present disclosure provides a battery pack, including a battery pack box, a battery cell module and a potting plastic part.

[0005] The battery pack box is provided with a receiving space, and the battery cell module is arranged in the receiving space;

[0006] The battery cell module includes a plurality of battery cell rows, each battery cell row includes a plurality of battery cells arranged along a first direction, and the plurality of battery cell rows are arranged along a second direction, and the second direction intersects with the first direction;

[0007] Among them, in the same battery cell row, the narrow sides of two adjacent battery cells are opposite, and there is a first gap between the narrow sides of the two adjacent battery cells, and the potting glue part is arranged in the first gap, and the potting glue part is a glue part formed by injecting glue into the accommodating space.

[0008] Optionally, the potting plastic part includes a first part;

[0009] There are multiple first parts, and each first gap is provided with a corresponding first part.

[0010] Optionally, two side walls of the first part in the first direction are in contact with side walls of two corresponding battery cells respectively.

[0011] Optionally, the potting plastic part includes a second part;

[0012] The battery pack case includes a battery tray, and the battery tray includes a bottom plate and a side frame arranged on the bottom plate. The battery cell module is arranged on the bottom plate, and the second part is located between the side frame and the battery cell module.

[0013] Optionally, the second portion includes two first sub-portions arranged opposite to each other along the first direction and two second sub-portions arranged opposite to each other along the second direction, and each of the first sub-portions is connected to each of the second sub-portions;

[0014] The side frame comprises two first side frames arranged opposite to each other along the first direction and two second side frames arranged opposite to each other along the second direction;

[0015] The first sub-portion is disposed between the side wall of the battery cell module and the first side frame, and the second sub-portion is disposed between the side wall of the battery cell module and the second side frame.

[0016] Optionally, at least one of the two first sub-parts is provided with a via hole;

[0017] The battery pack includes a signal acquisition electrical connector and a signal acquisition connection bar, wherein the signal acquisition electrical connector is disposed on the first side frame, the signal acquisition connection bar is connected to the battery cell module, and the signal acquisition electrical connector is electrically connected to the signal acquisition connection bar through a connector;

[0018] At least one of the signal collection electrical connector and the connector is inserted through the via hole.

[0019] Optionally, the potting plastic part further includes a third part;

[0020] The battery pack box includes a battery tray and an upper cover, wherein the upper cover is arranged at the upper end of the battery tray;

[0021] The third portion is located between the upper end of the battery cell module and the upper cover.

[0022] Optionally, the battery pack further comprises at least one heat exchange plate;

[0023] The heat exchange plate is arranged between two adjacent battery cell rows.

[0024] Optionally, the battery cell is a square battery cell, and a length direction of the battery cell is the same as the first direction.

[0025] According to a second aspect of the present disclosure, there is provided an electric device, comprising the battery pack, wherein the battery pack is used to supply power to the electric device.

[0026] Through the above technical scheme, a potting glue part is arranged between the narrow sides of the battery cells to provide thermal insulation protection between the narrow sides of adjacent battery cells, which can effectively prevent heat transfer from the narrow sides of the battery cells, thereby preventing the battery pack from having excessive heat that affects the service life of the battery cells and avoiding safety hazards such as thermal runaway. In addition, the method of directly injecting potting glue into the accommodating space to fill the first gap can save the process of assembling the thermal insulation part, simplify the process difficulty of setting the thermal insulation part, and thus simplify the difficulty of assembling the battery pack.

[0027] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0029] Figure 1 is a schematic structural diagram of various components of a battery pack provided by an exemplary embodiment of the present disclosure in an exploded state;

[0030] Figure 2 is a schematic structural diagram of various components of a battery pack provided by an exemplary embodiment of the present disclosure in an exploded state, wherein a battery pack case is not shown;

[0031] Figure 3 is a structural schematic diagram of the radiation viewing angle of a potting plastic part provided by an exemplary embodiment of the present disclosure;

[0032] Figure 4 yes Figure 3 A magnified schematic diagram of part A;

[0033] Figure 5 is a cross-sectional view of a battery pack provided by an exemplary embodiment of the present disclosure in an assembled state along the second direction, wherein the potting plastic part is hidden;

[0034] Figure 6 yes Figure 3 A magnified schematic diagram of part B;

[0035] Figure 7 is a cross-sectional view of a battery pack provided by an exemplary embodiment of the present disclosure in an assembled state along a first direction, wherein the potting plastic part is hidden;

[0036] Figure 8 It is a processing step in a battery pack processing method provided in an exemplary embodiment of the present disclosure.

[0037] Description of Reference Numerals

[0038] 100. battery pack, 10. battery pack case, 11. battery tray, 111. bottom plate, 112. side frame, 1121. first side frame, 1122. second side frame, 12. upper cover, 13. accommodating space, 20. battery cell module, 21. battery cell, 22. battery cell array, 23. first gap, 30. heat exchange plate, 40. potting glue part, 41. first part, 42. second part, 421. first sub-part, 4211. via, 422. second sub-part, 43. third part, 50. electrical connection row, 60. signal acquisition electrical connector, 70. signal acquisition connection row. DETAILED DESCRIPTION

[0039] The specific embodiments of the present disclosure are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure, and are not used to limit the present disclosure.

[0040] It should be understood that in the present disclosure, unless otherwise stated, the directions or positional relationships indicated by the directional words such as "upper" and "lower" are defined based on the drawing directions shown in the corresponding drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific directional structure and operation, and therefore cannot be understood as a limitation on the present disclosure. The terms "inside" and "outside" can refer to the inside and outside of the corresponding structural contour. "First direction" and "second direction" can refer to Figure 1 , Figure 2 , Figure 3 In addition, it should be noted that the terms such as "first", "second", "third", etc. are used to distinguish one element from another element and do not have order and importance. In addition, in the description with reference to the drawings, the same mark in different drawings represents the same element.

[0041] In the description of the present disclosure, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "connected", and "installed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0042] It should be noted that all actions of acquiring signals, information or data in the present disclosure are carried out in compliance with the relevant data protection laws and policies of the country where the device is located and with the authorization given by the owner of the corresponding device.

[0043] Research has found that thermal insulation protection between battery cells is particularly important for the service life of battery cells. Most related technical solutions adopt methods such as setting water cooling plates or insulation pads between the large surfaces of battery cells to achieve thermal insulation protection and cooling effects. However, there is a lack of thermal insulation protection for the narrow surfaces of the battery cells, and heat will still be transferred on the narrow surfaces of the battery cells. Therefore, the thermal insulation effect between the battery cells in related technologies is not ideal.

[0044] In view of this, if Figures 1 to 7 As shown, according to the first aspect of the present disclosure, a battery pack is provided, the battery pack 100 comprising a battery pack case 10, a battery cell module 20 and a potting glue part 40, a containing space 13 is arranged in the battery pack case 10, the battery cell module 20 is arranged in the containing space 13, the battery cell module 20 comprises a plurality of battery cell columns 22, each battery cell column 22 comprises a plurality of battery cells 21 arranged along a first direction, the plurality of battery cell columns 22 are arranged along a second direction, the second direction intersects with the first direction, wherein, in the same battery cell column 22, the narrow surfaces of two adjacent battery cells 21 are opposite, and a first gap 23 is provided between the narrow surfaces of the two adjacent battery cells 21, a potting glue part 40 is provided in the first gap 23, the potting glue part 40 is a glue part formed by injecting glue into the containing space 13, in other words, the potting glue part 40 is a glue part formed by injecting glue into the battery pack case 10 and curing it when assembling the battery pack 100.

[0045] In the present disclosure, a potting rubber part 40 is provided between the narrow surfaces of two adjacent battery cells 21 to provide thermal insulation protection between the narrow surfaces of the adjacent battery cells 21, thereby effectively preventing heat transfer from the narrow surfaces of the battery cells 21, thereby preventing the battery pack 100 from having excessive heat that affects the service life of the battery cells 21 and avoiding safety hazards such as thermal runaway.

[0046] Furthermore, compared to the installation method of assembling a thermal insulation member between the narrow surfaces of adjacent battery cells 21 to fill the first gap 23, the method disclosed in the present invention of directly filling the first gap 23 by injecting potting glue into the accommodating space 13 can omit the process of assembling the thermal insulation member, and can simplify the process difficulty of setting the thermal insulation member, thereby simplifying the assembly difficulty of the battery pack 100.

[0047] Among them, the narrow side of the battery cell refers to a side with a relatively smaller area among multiple sides of the battery cell 21 in the second direction of the battery pack 100. For example, when the battery pack 100 is installed at the bottom of the vehicle, the narrow side of the battery cell 21 is a side defined by the edges in the first direction and height direction of the battery cell 21.

[0048] In the present disclosure, the angle at which the second direction intersects the first direction is not limited, and can be any appropriate angle, as long as the arrangement of the battery cells 21 in the battery pack 100 is reasonable, for example, Figure 1 The vertical intersection shown.

[0049] The first direction may be the length direction of the battery pack 100 or the width direction of the battery pack 100, and the second direction may be the length direction of the battery pack 100 or the width direction of the battery pack 100, which is not limited in the present disclosure. Optionally, in an embodiment of the present disclosure, the first direction may be the length direction of the battery pack 100, and the second direction may be the width direction of the battery pack 100.

[0050] The multiple battery cell columns 22 may include two or more columns, the multiple battery cells 21 in each battery cell column 22 may include two or more battery cells 21 , the multiple battery cells 21 are connected in series to form the battery cell column 22 , and the battery cell columns 22 may be connected in series.

[0051] In the present disclosure, the potting glue part 40 is in liquid form before being cured and has fluidity. The potting glue part 40 is set between the narrow surfaces of the two battery cells 21. It is only necessary to inject the potting glue into the first gap 23 between the narrow surfaces of the two battery cells 21 and wait for it to cure. After the potting glue is cured, the potting glue part 40 is located between the narrow surfaces of the two battery cells 21, which can play a role in heat insulation.

[0052] The present disclosure does not limit the shape of the battery cell 21. The battery cell 21 may be a square battery cell or other battery cells 21 with narrow surfaces. Figure 1 and Figure 2 As shown, the battery cell 21 is a square battery cell, and the length direction of the battery cell 21 can be the same as the first direction.

[0053] In this disclosure, Figure 3 and Figure 4 As shown, the potting plastic part 40 may include a first part 41, and the number of the first parts 41 is multiple to accommodate the first gaps 23 between multiple adjacent battery cells 21 in the battery pack 100, and a corresponding first part 41 is arranged in each first gap 23. The first part 41 here is used to be arranged between the narrow surfaces of two battery cells 21, and plays a role in heat insulation between the narrow surfaces of two adjacent battery cells 21.

[0054] In the present disclosure, the specific shape of the first portion 41 is not limited, as long as it can play a role in heat insulation between the narrow surfaces of the two battery cells 21, such as Figure 3 As shown, in an undisclosed embodiment, the two side walls of the two first parts 41 in the first direction can respectively contact the side walls of the corresponding two battery cells 21. That is, the first part 41 fills the first gap 23 in the first direction. In other words, the first gap 23 can be only set in the first part of the potting plastic part 40. Such a setting can, on the one hand, make the first gap 23 as small as possible, thereby saving space and facilitating the improvement of the energy density of the entire battery pack 100. On the other hand, it is conducive to reducing the number of components used in the first gap 23.

[0055] In this disclosure, Figure 3 As shown, the potting glue 40 may include a second portion 42, the battery pack body 10 may include a battery tray 11, the battery tray 11 includes a bottom plate 111 and a side frame 112 disposed on the bottom plate 111, the battery cell module 20 is disposed on the bottom plate 111, and the second portion 42 is located between the side frame 112 and the battery cell module 20. Disposing the second portion 42 of the potting glue 40 between the side wall of the battery cell module 20 and the side frame 112 can improve the rigidity of the entire battery pack 100.

[0056] In the present disclosure, the lower end of the battery cell module 20 is installed on the bottom plate 111. Before the potting glue is injected, there is a second gap between the side wall of the battery cell module 20 and the side frame 112 of the battery tray 11. The second part 42 of the potting glue part 40 is filled in the second gap. The two opposite side walls of the second part 42 can respectively contact the side wall of the battery cell module 20 and the side wall of the side frame 112, thereby connecting the side frame 112 and the battery cell module 20, which is beneficial to improve the rigidity of the entire battery pack 100.

[0057] The specific structure of the second part 42 is not limited in the present disclosure. The second part 42 may include two first sub-parts 421 arranged oppositely along the first direction and two second sub-parts 422 arranged oppositely along the second direction. Each first sub-part 421 is connected to the second sub-part 422. The side frame 112 includes two first side frames 1121 arranged oppositely along the first direction and two second side frames 1122 arranged oppositely along the second direction. The first sub-part 421 is arranged between the side wall of the battery module 20 and the first side frame 1121, and the second sub-part 422 is arranged between the side wall of the battery module 20 and the second side frame 1122. Here, the first sub-part 421 and the second sub-part 422 are connected to form an annular frame to enclose the battery module 20.

[0058] In this disclosure, Figure 3 and Figure 6 As shown, at least one of the two first sub-parts 421 is provided with a via 4211, the battery pack 100 includes a signal collection electrical connector 60 and a signal collection connection row 70, the signal collection electrical connector 60 is provided on the first side frame 1121, the signal collection connection row 70 is connected to the battery cell module 20, the signal collection electrical connector 60 is electrically connected to the signal collection connection row 70 through a connector (not shown), and the signal collection electrical connector 60 and at least one of the electrical connectors are passed through the via 4211. The signal collection connection row 70 and the signal collection electrical connector 60 are used to collect signals, and the via 4211 is provided for the signal collection electrical connector 60 and / or the electrical connector to pass through, so as to facilitate the connection between the signal collection electrical connector 60 and the signal collection connection row 70.

[0059] In this disclosure, Figure 3 As shown, the potting glue 40 may include a third portion 43. In the embodiment where the battery pack body 10 includes a battery tray 11 and an upper cover 12, the third portion 43 may be located between the upper end of the battery cell module 20 and the upper cover 12. The third portion 43 of the potting glue 40 is disposed between the upper end of the battery cell module 20 and the upper cover 12, so as to improve the rigidity of the entire battery pack 100.

[0060] In the present disclosure, the lower end of the battery cell module 20 is installed on the battery tray 11. Before the potting glue is injected, there may be a third gap between the upper end of the battery cell module 20 and the upper cover 12. The third part 43 of the potting glue part 40 is filled in the third gap. The upper side wall of the third part 43 contacts the lower side wall of the upper cover 12, and the lower side wall of the third part 43 can contact the upper end of the battery cell module 20. The third part 43 can serve as a connection between the two, thereby improving the rigidity of the entire battery pack 100.

[0061] In the present disclosure, there is no limitation on the molding method of the potting glue part 40 and the presentation form after curing. The above-mentioned first part 41, second part 42 and third part 43 of the potting glue part 40 are an integrally molded part that is potted and molded in the battery pack 100.

[0062] In the present disclosure, the battery pack 100 may further include a plurality of electrical connection bars 50, the electrical connection bars 50 being used to electrically connect adjacent battery cells 21, and the third portion 43 is disposed between the electrical connection bars 50 and the battery cells 21 in the height direction of the battery pack 100. The potting plastic member 40 is disposed between the electrical connection bars 50 and the battery cells 21 to ensure the connection position between the electrical connection bars 50 and the battery cells 21, and to enhance the rigidity between the battery cell modules 20.

[0063] In the present disclosure, the battery pack 100 may further include at least one heat exchange plate 30 , and a heat exchange plate 30 is disposed between two adjacent battery cell columns 22 . The heat exchange plate 30 is used to isolate the heat between the wide surfaces of the battery cells 21 , and at the same time, can play a role in heat exchange with the battery cells 21 .

[0064] Among them, the wide side of the battery cell 21 refers to a side with a relatively larger area among multiple sides of the battery cell 21 in the first direction of the battery pack 100. For example, when the battery pack 100 is installed at the bottom of the vehicle, the wide side of the battery cell 21 is a side defined by the edges in the second direction and height direction of the battery cell 21.

[0065] The type of the heat exchange plate 30 is not limited here, and it can be a water-cooled plate or a gel pad, as long as it can have a heat exchange effect.

[0066] According to another aspect of the present disclosure, there is provided an electric device including a battery pack, wherein the battery pack 100 is used to supply power to the electric device.

[0067] Here, the electrical equipment may be vehicles, mobile phones, portable devices, laptop computers, ships, spacecraft, electric toys, and electric tools, etc. Vehicles may be fuel vehicles, gas vehicles, or new energy vehicles, and new energy vehicles may be pure electric vehicles, hybrid vehicles, or extended-range vehicles, etc. Electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools, and railway electric tools, which are not limited in the present disclosure.

[0068] Optionally, when the electrical device is a vehicle, the battery pack 100 of the present disclosure may be installed on the body of the vehicle to provide power for driving the vehicle.

[0069] like Figure 8 As shown, according to another aspect of the present disclosure, a method for thermally isolating a battery pack 100 is provided, and the method may include the following steps:

[0070] S100: Providing a battery pack box 10;

[0071] S200: battery cell module 20;

[0072] S300: The battery cell module 20 is arranged in the accommodation space 13 in the battery pack box 10, wherein Figure 1 and 2 As shown, the battery cell module 20 may include a plurality of battery cell rows 22, each battery cell row 22 includes a plurality of battery cells 21 arranged along a first direction, and the plurality of battery cell rows 22 are arranged along a second direction, the second direction intersects with the first direction, and in the same battery cell row 22, the narrow sides of two adjacent battery cells 21 face each other, and there is a first gap 23 between the narrow sides of the two adjacent battery cells 21, that is, the battery pack 100 may be Figures 1 to 7 The battery pack 100 shown;

[0073] S400: Inject potting glue into the accommodation space 1310 so that the injected potting glue at least fills the first gap 23. Here, the potting glue can be injected into the first gap 23 between the narrow surfaces of the two battery cells 21 and wait for it to solidify. The solidified potting glue can form the above-mentioned potting glue part 40 and be located between the narrow surfaces of the two battery cells 21. In this way, as mentioned above, it can play a role in heat insulation, thereby preventing the battery pack 100 from being overheated and affecting the use of the battery cells 21.

[0074] Moreover, compared with the installation method of assembling a heat insulating member between the narrow surfaces of adjacent battery cells 21 to fill the first gap 23, the method disclosed in the present invention of directly injecting potting glue into the accommodating space 13 to fill the first gap 23 can save the process of assembling the heat insulating member, simplify the process difficulty of setting the heat insulating member, and thus simplify the assembly difficulty of the battery pack 100. Moreover, the use of the glue injection method can ensure that the first gap 23 can be filled according to the required amount, thereby ensuring the reliability of heat insulation.

[0075] In this disclosure, Figure 1 In the embodiment shown in the figure, the battery box includes a battery tray 11, the battery tray 11 includes a bottom plate 111 and a side frame 112 arranged on the bottom plate 111, the battery module 20 is arranged on the bottom plate 111, and there is a second gap between the side frame 112 and the side wall of the battery module 20,

[0076] In the process of injecting the potting glue into the accommodation space 13, that is, in step S400, the amount of the potting glue can be controlled so that the injected potting glue can also fill the second gap. The potting glue filled in the second gap is solidified to form the second part 42 of the potting glue part 40. The second part 42 is filled between the side wall of the battery cell module 20 and the side frame 112 to improve the rigidity of the entire battery pack 100.

[0077] Alternatively, if Figure 1 The battery case shown also includes an upper cover 12. In the embodiment with a third gap between the upper end of the battery module 20 and the upper cover 12, in the process of injecting the potting glue into the accommodating space 13, that is, in step S400, the amount of the potting glue can be controlled so that the injected potting glue can also fill the third gap. The potting glue filled into the third gap is solidified to form the third part 43 of the potting glue part 40. The third part 43 is filled between the upper end of the battery module 20 and the upper cover 12, which can improve the rigidity of the entire battery pack 100.

[0078] Here, the amount of potting compound can be calculated based on the size of the battery pack 100 and the type of potting compound, which is not limited in the present disclosure.

[0079] In the present disclosure, optionally, the method for processing the battery pack 100 may further include: after injecting the potting glue into the accommodating space 13 , placing the upper cover 12 on the battery tray 11 , thereby processing the battery pack 100 .

[0080] An optional specific step in the processing method of the battery pack 100 disclosed in the present invention will be briefly described below in conjunction with the accompanying drawings:

[0081] The battery cell module 20 can be fixed in position by tooling, the electrical connection row 50 can be connected, and then the entire battery cell module 20 and its electrical connection row can be installed on the battery tray 11 of the battery pack case 10. At this time, the heat exchange plate 30 has been installed on the battery tray 11. The battery cell module 20 is installed in conjunction with the heat exchange plate 30, wherein the heat exchange plate 30 and the battery cell 21 are bonded with glue, the heat exchange plate 30 and the bottom plate 111 of the battery tray 11 are bonded with glue, and the bottom of the battery cell 21 and the bottom plate 111 of the battery tray 11 are bonded with glue. After the installation of the battery cell module 20 is completed, potting glue is injected into the battery pack case 10. Since the potting glue is fluid, the upper cover 12 is covered after the potting glue is injected. After the potting glue is cured, a potting glue part 40 can be formed to fill the gap between the battery pack case 10 and the battery cell module 20.

[0082] Among them, potting glue can be used for bonding, sealing, potting and coating protection of electronic components. Before curing, potting glue is in liquid state and has fluidity. The viscosity of the glue varies according to the material, performance and production process of the product.

[0083] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0084] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0085] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A battery pack, characterized in that: Including battery pack box, battery module and potting plastic parts, The battery pack box is provided with a receiving space, and the battery cell module is arranged in the receiving space; The battery cell module includes a plurality of battery cell rows, each battery cell row includes a plurality of battery cells arranged along a first direction, and the plurality of battery cell rows are arranged along a second direction, and the second direction intersects with the first direction; Among them, in the same battery cell row, the narrow sides of two adjacent battery cells are opposite, and there is a first gap between the narrow sides of the two adjacent battery cells, and the potting glue part is arranged in the first gap, and the potting glue part is a glue part formed by injecting glue into the accommodating space.

2. The battery pack according to claim 1, characterized in that: The potting plastic part includes a first part; There are multiple first parts, and each first gap is provided with a corresponding first part.

3. The battery pack according to claim 2, characterized in that: Two side walls of the first part in the first direction are in contact with side walls of two corresponding battery cells respectively.

4. The battery pack according to any one of claims 1 to 3, characterized in that: The potting plastic part includes a second part; The battery pack case includes a battery tray, and the battery tray includes a bottom plate and a side frame arranged on the bottom plate. The battery cell module is arranged on the bottom plate, and the second part is located between the side frame and the battery cell module.

5. The battery pack according to claim 4, characterized in that: The second part includes two first sub-parts arranged opposite to each other along the first direction and two second sub-parts arranged opposite to each other along the second direction, and each of the first sub-parts is connected to each of the second sub-parts; The side frame comprises two first side frames arranged opposite to each other along the first direction and two second side frames arranged opposite to each other along the second direction; The first sub-portion is disposed between the side wall of the battery cell module and the first side frame, and the second sub-portion is disposed between the side wall of the battery cell module and the second side frame.

6. The battery pack according to claim 5, characterized in that: At least one of the two first sub-parts is provided with a via hole; The battery pack includes a signal acquisition electrical connector and a signal acquisition connection bar, wherein the signal acquisition electrical connector is disposed on the first side frame, the signal acquisition connection bar is connected to the battery cell module, and the signal acquisition electrical connector is electrically connected to the signal acquisition connection bar through a connector; At least one of the signal collection electrical connector and the connector is inserted through the via hole.

7. The battery pack according to any one of claims 1 to 3, characterized in that: The potting plastic part also includes a third part; The battery pack box includes a battery tray and an upper cover, wherein the upper cover is arranged at the upper end of the battery tray; The third portion is located between the upper end of the battery cell module and the upper cover.

8. The battery pack according to any one of claims 1 to 3, characterized in that: The battery pack further comprises at least one heat exchange plate; The heat exchange plate is arranged between two adjacent battery cell rows.

9. The battery pack according to any one of claims 1 to 3, characterized in that: The battery cell is a square battery cell, and the length direction of the battery cell is the same as the first direction.

10. An electrical device, characterized in that: It comprises a battery pack according to any one of claims 1 to 9, wherein the battery pack is used to supply power to the electrical device.

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